 /*******************************************************************************
  * Copyright (c) 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.texteditor;

 import java.util.ResourceBundle ;

 import org.eclipse.core.runtime.Assert;

 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.ui.texteditor.IUpdate;
 import org.eclipse.ui.texteditor.ResourceAction;

 /**
  *
  * @since 3.3
  */
 public class BooleanPreferenceToggleAction extends ResourceAction implements IUpdate {

     private final String fKey;
     private final IPreferenceStore fPreferences;

     public BooleanPreferenceToggleAction(ResourceBundle bundle, String prefix, int style, IPreferenceStore preferences, String key) {
         super(bundle, prefix, style);
         Assert.isLegal(preferences != null);
         Assert.isLegal(key != null);
         fPreferences= preferences;
         fKey= key;
         
         update();
     }

     /*
      * @see org.eclipse.ui.texteditor.IUpdate#update()
      */
     public void update() {
         setChecked(fPreferences.getBoolean(fKey));
     }
     
     /*
      * @see org.eclipse.jface.action.Action#run()
      */
     public void run() {
         boolean state= fPreferences.getBoolean(fKey);
         fPreferences.setValue(fKey, !state);
     }
 }

